Carpenter s square



(No Model.)

W. H. OALLIH'AN.

- OARPENTERS SQUARE. No. 265,383. Patented Oct. 3, 1882.

WITNESSES: INVENTQR:

Mp /l7 BY I ATTORNEYS.

NITEI) STATES ATENT QFFICE.

YVILLIE H. GALLIHAN, OE GALVESTON, TEXAS.

CARPENTERS SQUARE.

SPECIFICATION forming part of Letters Patent No. 265,383, dated October3, 1882.

Application filed November 16, 1881.

To all whom it m any concern Be it known that I, WILLIE H. OALLIHAN, ofGalveston, in the county of Galveston and State of Texas, have inventeda new and useful Improvement in Carpenters Squares, of which thefollowing is a full, clear, and exact description.

My improved square is intended to be plated with nickel or similarmetal; and my invention has for its object such construction of thesquare that the plated surfaces will be protected from wear, and thesquare made stronger and better than those in common use.

My invention consists in forming the blades of the square with ribs orraised portions extending along or across them, and also of thickeningthe square at the angle. 7

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure 1 is a plan View of my improved square. Fig. 2 is a cross-sectionof the same, taken on the line 00 m of Fig.1.

A represents the angle of the square, which is made thicker than theblades B 0. Along the blades are formed the ribs or raised portions to aat the edges and b b nearer the centor of the blade. These ribs orraised portions are upon both sides of the square. The sunken surfaces0, d, and 6, between the ribs or raised portions, are plated. The facesof the ribs or raised portions need not be plated. In

(No model.)

use these raised portions or ribs and the thicken ed portion at theangle receive all the wear, and thus protect the plated surfaces.Besides, the blades are stronger and less liable to spring or bend byreason of the ribs being made on them, and thus the square is made moredurable and better.

Though I haveshown four ribs on the sides of the blades, it is obviousthat a greater or less number might be used, and that they might bevariously arranged relative to each other and not depart from theprinciple of my invention.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. A carpenters square having its blades B 0provided with the longitudinal parallel ribs a (0 along its edges, andthe intermediate 1ongitudinal parallel ribs, I) 12, substantially asherein shown and described,whereby the blades are strengthened and thespaces between ribs prevented from wear, as set forth.

2. The square constructed substantially as herein shown and described,made with the thickened angle A and the raised portions or ribs to andb, the sunken portions being plated, as and for the purposes set forth.

WILLIE HOYLE GALLIHAN.

Witnesses O. F. BAKER, R. S. WILSON.

